Entity Function Matrix

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Entity Function Matrix Putting It All Together

• Northern College Diploma
• Philip Bird

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The SSADM Route
Data Flow Modelling
Entity Modelling
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Entity Function Matrix

• Cross reference entities with functions.
• List all entities from entity modelling.
• List all functions from data flow modelling.
• Mark the intersection with a Delete, Read,
  Modify, Create or leave blank.
• In a full system all entities should have D, C,
  R/M entries.

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Order Processing DFD
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Order Processing Entity Model
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Entity Function Matrix
Process




Process
1 Place order
2 Cancel order
3 Get stock delivery
4 Add new customer
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Entity Function Matrix
Process
1 Place order
2 Cancel order
3 Get stock delivery
4 Add new customer
Entity Process
Customer Order Product
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Entity Function Matrix
Entity Process Customer Order Product
1 Place order
2 Cancel order
3 Get stock delivery
4 Add new customer
R C M
R D M
M
C